When an SCU wishes to connect to an SCP, the SCU calls DicomNet.Connect. This generates a call to the DicomNet.OnAccept method on the SCP, to let the SCP know that a connection request has been received.

The SCP should respond by creating a DICOM Network object and specifying this new object in a call to the DicomNet.Accept method. Creating an object for this specific connection allows the SCP to maintain information about the connection. Calling DicomNet.Accept will generate a call to DicomNet.OnConnect on the SCU. At this time the DICOM Network connection has been established. (An SCP should always accept a connection request. Once the connection is made the SCP can check the SCU and close the connection if it does not wish to maintain it. Since the connection requests are queued, if the connection is not accepted, it remains in the queue. When the next request is received, it is placed in the queue behind the first request. Calling DicomNet.Accept at this point will connect the first request, not the second, since the first request is still in the queue.)